基于信道化的宽带信号测向偏差校正

Deviation-Correcting of Wideband Signal DOA Based on Channelizing

基于移相器的宽带相控阵天线在测向中进行角度扫描时,由于渡越时间、孔径效应的影响,收发信号不能有效地同相合成,难以实现期望的波束形成和波束指向控制。鉴于采用模拟延迟线方法带来设备体积大等问题,论文从数字化方法考虑,采用信道化对频率分段。在每个信道中进行适当值进行补偿校正,有效改善了测向角度偏差问题。

When phase array antenna scans wideband signals in DOA（ Direction of Arrival） , for the infection of transit time and aperture effect, signals received or launched can＇t synthesize in phase effectively. This makes it hard to realize expected beam forming and direction controlling of beam. For the problem of devices size brought from analogue delay time method,a digital method is presented. It is mainly about channelizing and compensating a proper parameter in every channel. It is proved to be helpful in correcting the angle deviation in DOA.